Error with [cutegigs_past_gigs]

Hello, I’ve created on my website (www.acoustijungle.it) a page for past events (http://www.acousticjungle.it/eventi-passati/).
I’ve written [cutegigs_past_gigs] on the page and at the moment I’ve erased all the gigs.
Also without gigs it tells me
Warning: Illegal string offset ‘limit’ in /home/mhd-01/www.acousticjungle.it/htdocs/wp-content/plugins/bizarski-cute-gigs/cutegigs.php on line 223

Warning: Illegal string offset ‘offset’ in /home/mhd-01/www.acousticjungle.it/htdocs/wp-content/plugins/bizarski-cute-gigs/cutegigs.php on line 224

If I create past events it seems that those “warnings” increases but at the end of this list of warnings, past events are displayed.

With incoming events no problems

http://wordpress.org/plugins/bizarski-cute-gigs/